Compositions – Electrolytes for electrical devices
Patent
1982-07-30
1984-02-07
Albrecht, Dennis L.
Compositions
Electrolytes for electrical devices
8111, 252 90, 252 95, 252 99, 252102, 25218633, 25218638, 502150, C11D 304, C11D 339, C11D 1100, D06L 302
Patent
active
044302436
ABSTRACT:
Laundry bleaching and detergent compositions comprising a peroxygen bleaching agent and a catalyst system therefor, the catalyst system comprising a heavy metal cation of defined bleach catalytic activity, particularly copper, iron or manganese cations, an auxiliary metal cation having little or no bleach catalytic activity, particularly zinc or aluminium cations, and a sequestrant having defined stability constants for the catalytic and auxiliary metal cations, particularly ethylenediaminetetraacetic acid, ethylenediaminetetra(methylenephosphonic acid) and water-soluble salts thereof. The laundry bleaching and detergent compositions deliver improved bleach performance, particularly at medium to high wash temperatures. Catalyst compositions for peroxygen bleaching agents are also disclosed.
REFERENCES:
patent: 3156654 (1964-11-01), Konecny
patent: 3583924 (1971-06-01), Demangeon
patent: 3736224 (1973-05-01), Grayson
patent: 4119557 (1978-10-01), Postlethwaite
patent: 4299739 (1981-11-01), Esposito
Albrecht Dennis L.
Aylor Robert B.
O'Flaherty Thomas H.
The Procter & Gamble & Company
Witte Richard C.
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